./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80de2bcb413ca82cf36ee5cabb22cc23421a986b ............................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80de2bcb413ca82cf36ee5cabb22cc23421a986b ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 13:46:51,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:51,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:51,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:51,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:51,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:51,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:51,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:51,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:51,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:51,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:51,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:51,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:51,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:51,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:51,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:51,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:51,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:51,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:51,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:51,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:51,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:51,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:51,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:51,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:51,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:51,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:51,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:51,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:51,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:51,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:51,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:51,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:51,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:51,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:51,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:51,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:51,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:51,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:51,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:51,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:51,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 13:46:51,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:51,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:51,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:51,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:51,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:51,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:51,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:51,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 13:46:51,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:51,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:51,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:51,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:51,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:51,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:51,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:51,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:51,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:51,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:51,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:51,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:51,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:51,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:51,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:51,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:51,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:51,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 13:46:51,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 13:46:51,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:51,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:51,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-10-24 13:46:52,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:52,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:52,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:52,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:52,422 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:52,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-24 13:46:52,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf970da7/14c8ce9814f1466ea4e3c6fd3d5cccf1/FLAG5e75943e2 [2020-10-24 13:46:53,158 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:53,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-24 13:46:53,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf970da7/14c8ce9814f1466ea4e3c6fd3d5cccf1/FLAG5e75943e2 [2020-10-24 13:46:53,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf970da7/14c8ce9814f1466ea4e3c6fd3d5cccf1 [2020-10-24 13:46:53,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:53,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:53,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:53,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:53,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:53,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e11598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53, skipping insertion in model container [2020-10-24 13:46:53,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,561 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:53,585 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:53,768 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:53,780 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:53,805 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:53,824 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:53,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53 WrapperNode [2020-10-24 13:46:53,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:53,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:53,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:53,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:53,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:53,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:53,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:53,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:53,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... [2020-10-24 13:46:53,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:53,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:53,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:53,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:53,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 13:46:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:54,530 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:54,530 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 13:46:54,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:54 BoogieIcfgContainer [2020-10-24 13:46:54,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:54,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:54,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:54,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:54,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:53" (1/3) ... [2020-10-24 13:46:54,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d01388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:54, skipping insertion in model container [2020-10-24 13:46:54,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:53" (2/3) ... [2020-10-24 13:46:54,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d01388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:54, skipping insertion in model container [2020-10-24 13:46:54,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:54" (3/3) ... [2020-10-24 13:46:54,545 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-10-24 13:46:54,569 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:54,574 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:54,591 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:54,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:54,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:54,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:54,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:54,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:54,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:54,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:54,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-24 13:46:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:54,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:54,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:54,672 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-10-24 13:46:54,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:54,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404806149] [2020-10-24 13:46:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:54,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404806149] [2020-10-24 13:46:54,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:54,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 13:46:54,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288733956] [2020-10-24 13:46:54,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:54,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 13:46:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:54,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:54,934 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-24 13:46:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:54,960 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-24 13:46:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:54,962 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 13:46:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:54,974 INFO L225 Difference]: With dead ends: 29 [2020-10-24 13:46:54,975 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 13:46:54,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 13:46:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-24 13:46:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 13:46:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-24 13:46:55,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-10-24 13:46:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:55,029 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-24 13:46:55,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-24 13:46:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:55,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:55,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:55,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 13:46:55,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-10-24 13:46:55,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:55,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145769142] [2020-10-24 13:46:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:55,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:55,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:55,116 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 13:46:55,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:46:55,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 13:46:55,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:55 BoogieIcfgContainer [2020-10-24 13:46:55,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:46:55,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:46:55,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:46:55,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:46:55,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:54" (3/4) ... [2020-10-24 13:46:55,154 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 13:46:55,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:46:55,157 INFO L168 Benchmark]: Toolchain (without parser) took 1657.33 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.2 MB in the beginning and 28.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,158 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:55,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.90 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 25.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.66 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 23.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,162 INFO L168 Benchmark]: Boogie Preprocessor took 39.55 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 33.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,163 INFO L168 Benchmark]: RCFGBuilder took 618.08 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 22.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,163 INFO L168 Benchmark]: TraceAbstraction took 610.26 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 28.7 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:55,164 INFO L168 Benchmark]: Witness Printer took 6.18 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 218.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:55,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.90 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 25.0 MB in the end (delta: -7.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.66 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 23.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.55 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 33.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 618.08 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 22.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 610.26 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 28.7 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.18 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 218.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 35, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 41, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 31. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 13:46:57,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:57,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:57,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:57,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:57,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:57,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:57,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:57,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:57,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:57,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:57,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:57,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:57,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:57,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:57,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:57,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:57,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:57,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:57,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:57,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:57,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:57,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:57,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:57,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:57,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:57,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:57,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:57,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:57,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:57,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:57,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:57,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:57,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:57,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:57,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:57,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:57,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:57,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:57,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:57,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:57,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 13:46:57,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:57,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:57,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:57,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:57,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:57,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:57,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:57,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:57,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:57,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:57,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:57,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:57,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 13:46:57,990 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 13:46:57,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:57,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:57,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:57,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:57,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:57,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:57,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:57,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:57,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:57,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:57,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:57,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:57,993 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 13:46:57,993 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 13:46:57,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:57,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:57,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 13:46:57,995 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-10-24 13:46:58,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:58,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:58,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:58,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:58,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:58,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-24 13:46:58,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ee8059f/dd17fa1e9ad742f38a928c623d36abf2/FLAGbf5f37042 [2020-10-24 13:46:59,209 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:59,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-24 13:46:59,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ee8059f/dd17fa1e9ad742f38a928c623d36abf2/FLAGbf5f37042 [2020-10-24 13:46:59,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ee8059f/dd17fa1e9ad742f38a928c623d36abf2 [2020-10-24 13:46:59,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:59,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:59,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:59,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:59,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:59,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:46:59,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d851320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59, skipping insertion in model container [2020-10-24 13:46:59,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:46:59,613 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:59,636 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:59,868 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:59,893 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:59,925 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:59,945 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:59,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59 WrapperNode [2020-10-24 13:46:59,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:59,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:59,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:59,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:59,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:46:59,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:47:00,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:47:00,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:47:00,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:47:00,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... [2020-10-24 13:47:00,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:47:00,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:47:00,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:47:00,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:47:00,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:47:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 13:47:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 13:47:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:47:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:47:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:47:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 13:47:10,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:47:10,670 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 13:47:10,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:47:10 BoogieIcfgContainer [2020-10-24 13:47:10,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:47:10,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:47:10,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:47:10,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:47:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:59" (1/3) ... [2020-10-24 13:47:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be17635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:47:10, skipping insertion in model container [2020-10-24 13:47:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:59" (2/3) ... [2020-10-24 13:47:10,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be17635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:47:10, skipping insertion in model container [2020-10-24 13:47:10,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:47:10" (3/3) ... [2020-10-24 13:47:10,683 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-10-24 13:47:10,696 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:47:10,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:47:10,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:47:10,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:47:10,749 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:47:10,749 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:47:10,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:47:10,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:47:10,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:47:10,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:47:10,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:47:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-24 13:47:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 13:47:10,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:47:10,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:47:10,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:47:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:47:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1121452915, now seen corresponding path program 1 times [2020-10-24 13:47:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:47:10,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314933649] [2020-10-24 13:47:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 13:47:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:47:16,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 13:47:16,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 13:47:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:47:16,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 13:47:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:47:16,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314933649] [2020-10-24 13:47:16,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:47:16,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 13:47:16,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47974430] [2020-10-24 13:47:16,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:47:16,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 13:47:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:47:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:47:16,450 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-24 13:47:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:47:16,469 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-24 13:47:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:47:16,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 13:47:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:47:16,481 INFO L225 Difference]: With dead ends: 31 [2020-10-24 13:47:16,481 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 13:47:16,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:47:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 13:47:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 13:47:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 13:47:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-24 13:47:16,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2020-10-24 13:47:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:47:16,523 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-24 13:47:16,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:47:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-24 13:47:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 13:47:16,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:47:16,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:47:16,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 13:47:16,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:47:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:47:16,743 INFO L82 PathProgramCache]: Analyzing trace with hash -441394545, now seen corresponding path program 1 times [2020-10-24 13:47:16,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:47:16,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678333437] [2020-10-24 13:47:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 13:49:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:49:14,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:50:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:50:28,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:50:28,909 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 13:50:28,909 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:50:29,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 13:50:29,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:50:29 BoogieIcfgContainer [2020-10-24 13:50:29,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:50:29,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:50:29,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:50:29,155 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:50:29,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:47:10" (3/4) ... [2020-10-24 13:50:29,162 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 13:50:29,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 13:50:29,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:50:29,223 INFO L168 Benchmark]: Toolchain (without parser) took 209637.74 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 41.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,224 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:50:29,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.44 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 29.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 26.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,226 INFO L168 Benchmark]: Boogie Preprocessor took 83.13 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,227 INFO L168 Benchmark]: RCFGBuilder took 10560.79 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 34.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,228 INFO L168 Benchmark]: TraceAbstraction took 198480.24 ms. Allocated memory is still 60.8 MB. Free memory was 34.2 MB in the beginning and 20.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,229 INFO L168 Benchmark]: Witness Printer took 65.28 ms. Allocated memory is still 60.8 MB. Free memory was 20.2 MB in the beginning and 41.7 MB in the end (delta: -21.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:50:29,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.44 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 29.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 26.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.13 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10560.79 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 34.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 198480.24 ms. Allocated memory is still 60.8 MB. Free memory was 34.2 MB in the beginning and 20.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 65.28 ms. Allocated memory is still 60.8 MB. Free memory was 20.2 MB in the beginning and 41.7 MB in the end (delta: -21.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L31] EXPR 2.0f [L31] EXPR -2.0f [L31] IN > -2.0f && IN < 2.0f [L31] EXPR 2.0f [L31] IN > -2.0f && IN < 2.0f [L15] COND FALSE !(!cond) [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] EXPR f(IN)/fp(IN) [L33] EXPR IN - f(IN)/fp(IN) [L33] float x = IN - f(IN)/fp(IN); [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] EXPR f(x)/fp(x) [L35] EXPR x - f(x)/fp(x) [L35] x = x - f(x)/fp(x) [L41] EXPR 0.1 [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 198.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 122.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...